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| TD350 Advanced IGBT/MOSFET driver Features 1.5 A source/2.3 A sink typ gate drive Active Miller clamp feature Two steps turn-off with adjustable level and delay Desaturation detection Fault status output Negative gate drive ability Input compatible with pulse transformer or optocoupler Separate sink and source outputs for easy gate drive UVLO protection 2 kV ESD protection (HBM) Description TD350 is an advanced gate driver for IGBT and power MOSFET. Control and protection functions are included and allow the design of high reliability systems. Innovative active Miller clamp function avoids the need of negative gate drive in most applications and allows the use of a simple bootstrap supply for the high side driver TD350 includes a two-level turn-off feature with adjustable level and delay. This function protects against excessive overvoltage at turn-off in case of overcurrent or short-circuit condition. Same delay is applied at turn-on to prevent pulse width distortion. TD350 also includes an IGBT desaturation protection and a FAULT status output. TD350 is compatible with both pulse transformer and optocoupler signals. Applications 1200 V 3-phase inverter Motor control UPS systems Table 1. Device summary Temperature range -40, +125C TD350IDT Package SO-14 Tape and reel Packaging Tube Order codes TD350ID April 2010 Doc ID 9525 Rev 6 1/17 www.st.com 17 Contents TD350 Contents 1 2 3 4 5 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Pin connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Absolute maximum ratings .................................. 5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Voltage reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Desaturation protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Active Miller clamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Two level turn-off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Minimum ON time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Fault status output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Undervoltage protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 6 7 8 9 10 Timing diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Typical performance curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Application diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 2/17 Doc ID 9525 Rev 6 TD350 Block diagram 1 Block diagram Figure 1. Schematic block diagram Vref IN Pulse Transformer VH Vref UVLO Desat Vref Block DESAT 16V VH Optionnal VREF FAULT NC COFF NC LVOFF OUTH OUTL VL CLAMP GND -10V Vref VH Off Level TD350 Doc ID 9525 Rev 6 Control Off delay 3/17 Pin connections TD350 2 Pin connections Figure 2. Pin connections (top view) IN VREF FAULT NC COFF NC LVOFF 1 2 3 4 5 6 7 14 13 12 DESAT VH OUTH OUTL VL CLAMP GND TD350 11 10 9 8 Table 2. Name IN VREF FAULT NC COFF NC LVOFF GND CLAMP VL OUTL OUTH VH DESAT Pin description Pin number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Type Analog input Analog output Digital output Not connected Timing capacitor Not connected Analog input Power supply Analog output Power supply Analog output Analog output Power supply Analog input Turn off level Signal ground Miller clamp Negative supply Gate drive output (sink) Gate drive output (source) Positive supply Desaturation protection Turn off delay Input +5V reference voltage Fault status output Function 4/17 Doc ID 9525 Rev 6 TD350 Absolute maximum ratings 3 Table 3. Symbol VHL VH VL Vout Vdes Vother Pd Tstg Tj Rthja Rthjc ESD Absolute maximum ratings Key parameters and their absolute maximum ratings Parameter Maximum supply voltage (VH - VL) Maximum VH voltage vs. GND Minimum VL voltage vs. GND Voltage on OUTH, OUTL, CLAMP pins Voltage on DESAT, FAULT, LVOFF pin Voltage on other pins (IN, COFF, VREF) Power dissipation Storage temperature Maximum junction temperature Thermal resistance junction-ambient Thermal resistance junction-case Electrostatic discharge (HBM) Value 28 28 -12 VL-0.3 to VH+0.3 -0.3 to VH+0.3 -0.3 to 7 500 -55 to 150 150 125 22 2 Unit V V V V V V mW C C C/W C/W kV Table 4. Symbol VH VL VH-VL Toper Operating conditions Parameter Positive supply voltage vs. GND Negative supply voltage vs. GND Maximum total supply voltage Operating free air temperature range Value UVLO to 26 0 to -10 26 -40 to 125 Unit V V V C Doc ID 9525 Rev 6 5/17 Electrical characteristics TD350 4 Electrical characteristics TA = -20 to 125 C, VH=16 V, VL=-10 V (unless otherwise specified) Table 5. Symbol Input Vton Vtoff tonmin Iinp Electrical characteristics Parameter Test condition Min Typ Max Unit IN turn-on threshold voltage IN turn-off threshold voltage Minimum pulse width IN input current 0.8 1.0 4.0 4.2 220 1 V V ns A 100 135 Voltage reference (1) Vref Iref Voltage reference Maximum output current T=25C Tmin Fault output tfault VFL Clamp Vtclamp VCL Off delay Vtdel Rdel Off levels Iblvoff Violv Outputs VOL1 VOL2 Output low voltage at Iosink=20mA Output low voltage at Iosink=200mA T=25C Tmin Doc ID 9525 Rev 6 TD350 Table 5. Symbol VOL3 VOH1 VOH2 VOH3 tr Electrical characteristics Electrical characteristics (continued) Parameter Output low voltage at Iosink=500mA Output high voltage 1 Output high voltage 2 Output high voltage 3 Rise time Test condition T=25C Tmin Fall time (2) tpd_on Turn-on propagation delay 10% output change; Tmin Turn-off propagation delay 10% output change; Tmin Under voltage lockout (UVLO) UVLOH UVLOL Vhyst UVLO top threshold UVLO bottom threshold UVLO hysteresis UVLOH-UVLOL 10 9 0.5 11 10 1 12 11 V V V Supply current Iin Quiescent current Output=0V, no load 5 mA 1. Recommended capacitor range on VREF pin is 10 nF to 100 nF. 2. 2 step turn-off disabled Doc ID 9525 Rev 6 7/17 Functional description TD350 5 5.1 Functional description Input The input is compatible with optocouplers or pulse transformers. The input is triggered by the signal edge and allows the use of low-sized, low-cost pulse transformer. Input is active low (output is high when input is low) to ease the use of optocoupler. When driven by a pulse transformer, the input pulse (positive and negative) width must be larger than the minimum pulse width tonmin. 5.2 Voltage reference A voltage reference is used to create accurate timing for the two-level turn-off with external resistor and capacitor. 5.3 Desaturation protection Desaturation protection ensures the protection of the IGBT in the event of overcurrent. When the DESAT voltage goes higher that 7 V, the output is driven low (with 2-level turn-off if applicable). The FAULT output is activated. The FAULT state is exited at the next falling edge of IN input. A programmable blanking time is used to allow enough time for IGBT saturation. Blanking time is provided by an internal current source and external capacitor. DESAT input can also be used with an external comparator for overcurrent or over temperature detection. 5.4 Active Miller clamp A Miller clamp allows the control of the Miller current during a high dV/dt situation and can avoid the use of a negative supply voltage. During turn-off, the gate voltage is monitored and the clamp output is activated when gate voltage goes below 2 V (relative to GND). The clamp voltage is VL+3 V max for a Miller current up to 500 mA. The clamp is disabled when the IN input is triggered again. 5.5 Two level turn-off The two-level turn-off is used to increase the reliability of the application. During turn-off, gate voltage can be reduced to a programmable level in order to reduce the IGBT current (in the event of over-current). This action avoids both dangerous overvoltage across the IGBT, and RBSOA problems, especially at short circuit turn-off. Turn-off (Ta) delay is programmable through an external resistor and capacitor for accurate timing. Turn-off delay (Ta) is also used to delay the input signal to prevent distortion of input pulse width. 8/17 Doc ID 9525 Rev 6 TD350 Functional description 5.6 Minimum ON time In order to ensure the proper operation of the 2-level turn-off function, the input ON time (Twin) must be greater than the Twinmin value: Twinmin=Ta+2*Rdel*Coff Rdel is the internal discharge resistor and Coff is the external timing capacitor. Input signals smaller than Ta are ignored. Input signals larger than Twinmin are transmitted to the output stage after the Ta delay with minimum width distortion (Tw=Twout-Twin). For an input signal width Twin between Ta and Twinmin, the output width Twout is reduced below Twin (pulse distortion) and the IGBT could be partially turned on. These input signals should be avoided during normal operation. 5.7 Output The output stage is able to sink 2.3 A and source 1.5 A typical at 25 C (1.2 A/0.75 A minimum over the full temperature range). Separated sink and source outputs allow independent gate charge and discharge control without an extra external diode. 5.8 Fault status output Fault output is used to signal a fault event (desaturation, UVLO) to a controller. The fault pin is designed to drive an optocoupler. 5.9 Undervoltage protection Undervoltage detection protects the application in the event of a low VH supply voltage (during start-up or a fault situation). During undervoltage, the OUTH pin is open and the OUTL pin is driven low (active pull-down for VH>2 V, passive pull-down for VH<2 V). Fault output signals the undervoltage state and is reset only when undervoltage state disappears. Figure 3. Undervoltage protection UVH VH UVL Vccmin 2V OUT FAULT Doc ID 9525 Rev 6 9/17 Functional description Figure 4. Detailed internal schematic TD350 UVLO Comp_Input IN Delay Vref 1V-4V VH VREF 250uA Comp_Desat DESAT 7.2V Control Block Vref FAULT Comp_DelayOff COFF Comp_Clamp 2.5V S2 2V CLAMP VH OUTH VH OUTL LVOFF 2-level OFF driver VL GND rev. 3 10/17 Doc ID 9525 Rev 6 TD350 Timing diagrams 6 Timing diagrams Figure 5. IN Turn-on and turn-off Twin COFF Ta VH level LVOFF OUT Twout Open CLAMP VH level Miller plateau Vge VL level Clamp threshold Ta VL level Vce Figure 6. IN Minimum ON time Tin 2.5V COFF Ta VH level LVOFF OUT VL level Open CLAMP Ta Ta Figure 7. IN Desaturation fault 2.5V COFF Ta Ta Ta VH level LVOFF OUT VL level 7V DESAT Desat Blanking Time FAULT open Doc ID 9525 Rev 6 11/17 Typical performance curves TD350 7 Figure 8. 5.0 4.0 In (mA) 3.0 2.0 1.0 0.0 Typical performance curves Supply current vs temperature Figure 9. 3.0 Low level output voltage vs temp. VOL-VL (V) 2.0 Iosink=500mA 1.0 Iosink=200mA Iosink=20mA 0.0 -50 -25 0 25 50 75 100 125 -50 -25 0 25 50 75 100 125 Temp (C) Temp (C) Figure 10. Desaturation threshold vs temp. 10 9 Vdes (V) 8 7 6 5 -50 -25 0 25 50 75 100 125 Temp (C) Figure 11. Voltage reference vs temp. 5.20 5.10 Vref (V) 5.00 4.90 4.80 -50 -25 0 25 50 75 100 125 Temp (C) Figure 12. High level output voltage vs temp. Figure 13. Desaturation source current vs temp. 500 400 Ides (uA) 4.0 3.0 VH-VOH (V) Iosource=500mA 2.0 300 200 100 0 Iosource=200mA 1.0 Iosource=20mA 0.0 -50 -25 0 25 50 75 100 125 Temp (C) -50 -25 0 25 50 75 100 125 Temp (C) 12/17 Doc ID 9525 Rev 6 TD350 Application diagrams 8 Application diagrams Figure 14. Single supply IGBT drive with active Miller clamp and 2-level turn-off VH UVLO Desat Vref Block IN 5.1V DESAT 16V VH OUTH OUTL VL CLAMP GND Vref VREF FAULT NC COFF NC LVOFF Vref VH Off Level TD350 Figure 15. Large IGBT drive with negative gate drive and desaturation detection Vref IN Pulse Transformer UVLO Desat Vref Block Control Off delay DESAT 16V VH OUTH OUTL VL CLAMP GND -10V VH Vref VREF FAULT NC Vref NC VH LVOFF Off Level TD350 Figure 16. Use of DESAT input for direct overcurrent detection Doc ID 9525 Rev 6 Control COFF Off delay 13/17 Package mechanical data TD350 9 Package mechanical data In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK(R) packages, depending on their level of environmental compliance. ECOPACK(R) specifications, grade definitions and product status are available at: www.st.com. ECOPACK(R) is an ST trademark. Table 6. Dim. Min A a1 a2 b b1 C c1 D E e e3 F G L M S 3.8 4.6 0.5 8.55 5.8 1.27 7.62 4.0 5.3 1.27 0.68 8 (max.) 0.149 0.181 0.019 0.35 0.19 0.5 45 (typ.) 8.75 6.2 0.336 0.228 0.050 0.300 0.157 0.208 0.050 0.026 0.344 0.244 0.1 Typ Max 1.75 0.2 1.65 0.46 0.25 0.013 0.007 0.019 0.003 Min Typ Max 0.068 0.007 0.064 0.018 0.010 SO-14 mechanical data mm. inch 14/17 Doc ID 9525 Rev 6 TD350 Figure 17. Package dimensions Package mechanical data Doc ID 9525 Rev 6 15/17 Revision history TD350 10 Revision history Table 7. Date Document revision history Revision 3 No history because migration Updated: Coverpage and Figure 7 Updated: Coverpage, Table 3, Table 5 and Figure 16 Updated: Table 5 Changes 01-Aug-2004 17-Feb-2010 28-Apr-2010 4 5 6 16/17 Doc ID 9525 Rev 6 TD350 Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries ("ST") reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST's terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such third party products or services or any intellectual property contained therein. UNLESS OTHERWISE SET FORTH IN ST'S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. UNLESS EXPRESSLY APPROVED IN WRITING BY AN AUTHORIZED ST REPRESENTATIVE, ST PRODUCTS ARE NOT RECOMMENDED, AUTHORIZED OR WARRANTED FOR USE IN MILITARY, AIR CRAFT, SPACE, LIFE SAVING, OR LIFE SUSTAINING APPLICATIONS, NOR IN PRODUCTS OR SYSTEMS WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY, DEATH, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. ST PRODUCTS WHICH ARE NOT SPECIFIED AS "AUTOMOTIVE GRADE" MAY ONLY BE USED IN AUTOMOTIVE APPLICATIONS AT USER'S OWN RISK. Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any liability of ST. ST and the ST logo are trademarks or registered trademarks of ST in various countries. Information in this document supersedes and replaces all information previously supplied. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners. (c) 2010 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Philippines - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com Doc ID 9525 Rev 6 17/17 |
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